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BS 2690-7:1968
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Methods of testing water used in industry Nitrite, nitrate and ammonia (free, saline and albuminoid)
Hardcopy , PDF
15-09-1993
English
30-08-1968
One method each for nitrite and nitrate and three of increasing sensitivity for ammonia. Distillation procedure for ammonia determination.
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